A Gentle Introduction to Stata, Fifth Edition by Alan C. Acock

Author:Alan C. Acock.
Language: eng
Format: epub
Publisher: Stata Press
Published: 2016-05-25T08:33:00+00:00

9.11

Summary

ANOVA is an extremely complex and powerful approach to analyzing data. We have only touched the surface of ANOVA here. Stata offers a powerful collection of advanced procedures that extend traditional ANOVA. In this chapter, you have learned how to

Conduct a one-way ANOVA as an extension of the independent test to three or more groups

Use nonparametric alternatives to ANOVA for comparing distributions or comparing medians when you have three or more groups

Control for a covariate through ANCOVA when you do not have randomization but know how the groups differ on background variables

Use a two-way ANOVA for situations in which you have two categorical predictors that might or might not interact with one another

Graph interaction effects for a two-way ANOVA

Perform a repeated-measures ANOVA as an extension of the dependent/paired test for when you have three or more measurements on each subject

Calculate the intraclass correlation coefficient to measure agreement or homogeneity within groups

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